Oil-refining still



Sept. 14 192$ c. MQORE ET AL OIL REFINING STILL Filed Sept. 4. 1924 2 Sheets-Sheet Sept. 14 1926. 1,599,833

. F. C. MOORE ET AL OIL REFINING S'FILL Filed Sept. 4. 1924 2 Sheets-Sheet 2 2.,931zenicms;

Mm W

Patented Sept. 14, 1926'.

UNITED STATES PATENT OFFICE;

oI L-nnrmmo STILL.

Application filed September, 1924. Serial No. 735,774.

This invention relates to oil refining stills, and consists of the novel features herein shown, described and claimed.

An object is to make an oil refining still 5 especially adapted for use in topping systems, the parts being so arranged that there is no direct contact of fire against the pipes through which. the oil passes. Another object is to make an oil refinin n still having a coil made up of straight para?- lel sections, the endsof' the sections being connected by return bends and the return bends being outside of the heat zone througl which the straight sections extend Another object is to make an oilreiinlng still having a coil made up of straight parallel sections, the ends of the sections being connected by return bends and the return bends being outside of the heat zone through 20 which the straight sections extend, the return bends being in pockets or chambers covered by doors so that by openin" the doors the return bends are accessible and may be removed or cut off and the corresponding 2 straight sections removed and new sections l nother object is to make a still having a comparatively large heating chamber and alarge amount of coil mounted in the chamber 30 through which the oilwill pass so as to pro-- duce a comparatively large capacity with a comparatively small fire and without allowing the fire to contact directly with the coil. Another object is to make a still having 35 a solidly enclosed heating chamber, mount straight pipe sections through the chamber and, through opposite walls to fill the chamber, and connect the ends of the pipe sections outside of the walls, as required to At make a continuous coil, and so that the connections may be applied or removed by'working outside of the chamber.

Other objects and advantages will appear from the drawings and specification. 5 The drawings illustrate the construction and operation of a still embodying the principles of our invention. t

Figure 1"s a to plan View looking in the direction indicate by the arrows 1 in Figs. 2, 3 and 4.

Fig. 2 2 of Figs. 1, 3 and A and looking in thedirectionindicated by the arrows.

0 A i I l 2 1s a sectional elevation on the lines Fig. 3 is a front elevation as indicated by the arrows 3 in Figs. 1 and 2.

Fig. 1 is a rear elevation as indicated by the arrows 4 in Figs. 1 and 2.

The upper face 1 of the furnace foundation is level and may be prepared ground or concrete. The side walls 2 and 3 and the firebox end walls 4 and 5 may be recessed into the foundation 1 and extend upwardly. Burner openings 6 and 7 are formed in the front walls 5 and inclined slightly from their outer ends downw-ardl and inwardly so as to direct the fire against the face 1 within-the side wall 2 -and 3. A firebox cover 8 connects the side walls 2 and 3 and extends from the top of the front wall 5 backwardly nearly to the firebox rear wall 4, thus f'orm ing a primary firebox 9 with an. outlet 10 at the rear end of the cover 8. The cover 8 is substantially parallel with the upper face 1 of the foundation. A return baffle plate 11 extends forwardly from the rear wall 4 7 to a point some distance infront of the rear s end of the cover 8 and is spaced above the cover 8 to make the return passage 12 leading from the passage 10 forwardly. A. bafile 1-3 extends u wardly across the cover 8 30 some distance in out of the forward end of the bafile 11. A heating chamber rear wall ltextends upwardly across the bafile 11 between-the side walls 2 and 3 and near the forward end of the baffle 11 and a heating chamber front wall. 15 extends u wardly from the cover 8 some distance hash of the front wall 5 and extends across the cover 8 to the side walls 2 and 3, thus producing the heating chamber 16.

A top 17 connects the side walls 2 and 3 and rests upon the heating chamber walls 14 and 15 and extends some distance backwardly and forwardly from the walls 14 and 15. outlet 18 is formed through the top 17 from the chamber 16. Anintermediate bafiie 19 is mounted horizontally across the chamber 16 half way between the top of the baflle 13'and the top 17 and extends from. the wall lnearly to the wall 15, there bein a passage 20 in front of the bafile 19 bac of thewall 15. 1A horizontal wall 21 extends from the bafile 19 through the wall 14 to make a pocket 22 between the bafile l1 and 1 the wall 21xback of the wall 14 and a pocket 105 23 above the wall 21 below the top 17 back Elli zontal wall 24 extends forwardly from the wall in line with the wall 19 to make pockets 25 and 26 above and below the wall 2iv in front of the wall 15.

The oil burners extending through the openings 6 and 7 will discharge backwardly through the chamber 9 and the products of combustionwill pass upwardly through the opening 10 and return passage 12 toward the baffle 13 and then will pass upwardly against the wall 19 and forwardly and upwardly through the opening 20 and backwardly and upwardly through the outlet 18 and the burners will be regulated so that the flames will not reach beyond the return passage 12 and so that no flame will reach the heating chamber 16.

The still coil or oil heating element, some times called a retort, consists of a large number of straight pipe sections 27 substantially evenly spaced apart and arranged substantially parallel with their ends ex tending through the walls let and 15 and return bends 28 in the pockets 22, 23, and 26 and successively connecting the pipe sections 27 as required to make a continuous coil having an inlet 29 and an outlet 30, the inlet being at the bottom and the outlet at the top, and so that in operation oil may continuously flow through the inlet back and forth upwardly through the coil to the outlet. The pipe sections 27 are in the heating chamber 16 and so disposed as to be subjected to an equal amount of heat and so that no one place will be over heated. Doors 31 are mounted to close the pockets 22 and and cover the return bends in the pockets, and similar doors 32 are mounted to close the pockets 25 and 26 and cover the return bends in the pockets. The coil is made up by placing the pipe sections in position with their ends sticking through the walls 14cand 15, placing the return bends in positions and welding the return bends to the pipe sections, and when a. pipe section becomes injured the corresponding return bend may be cut oil with a torch, the pipe section removed, and a new pipe section applied.

The object of makingthe pockets 22', 23,-

25 and 26 and placing the return bends in the pockets is to make the return bends inthe pockets readily accessible for building up the coil and for removing a pipe section and applying a new one, and by this construction it ispossible to make the heating chamber 16 solidly enclosed except at the inlet and outlet and to fill the chamber full of pipes, which would not be practical if the pipe work had to be done within the heating chamber.

It is understood that in a topping plant the oilis not to be heated enou h to deposit carbon and that the heating chamber is to be maintained at a temperature of about 500 l and that the principal object is to obtain a large capacity from a-small plant and an essential feature is to till the heating chamber to the largest possible extent with the coil, as unfilled space in the heating chamber is waste.

Another important feature is the con.- struction of the setting so that the heating chamber is solidly enclosed.

Special. attention is called to the fact that the return bends are mounted upon vertical inclines so that the oil continuously passes through an upper pipe, then downwardly through a return bend and a lower pipe, and upwardly through another return bend to an upper pipe, and so on, so that the lower series of pipes forms traps or settling bases and the vapor and lighter oil will continuouslyllow from the lower pipes to the upper pipes, .wl-iereas if the oil is made with a coi'itinuous upward flow pockets of vapor will tend to blow all the oil in front of the pockets out of the coil.

furious changes may be. made without departing from the spirit of the invention as claimed.

We claim:

1. An oil refining still comprising in combination a furnace having side walls, a lire box formed between said walls adjacent their base, the fire box having lire box front and rear walls and a lire box cover extend ing rearwardly from the front wall, the 'lront wall having burner openings and the box cover having an. outlet adpiccnt the rear wall, a ballie plate positioned over said outlet extending forwardly from the rear wall, front and rear heating chamber walls, the front wall being positioned on the cover and the rear wall being positioned on the baiile plate, said walls extending between the side walls, a top forming a cover between the side and the heatin chamber i ront and rear walls, said top iaving an outlet, the side walls and the cover extending 'l'orwardy and rcarwardly from the said heating chamber front and rear walls, a stack of straight pipes inserted in the heating chamber extending through the heating ch-aniber front and rear walls and having return bends outside said walls and removable covcrs over the return bends fitting be tween the side walls and the top cover.

' 2. An oil refining still comprising in conibination vertical side walls, a primary lire box built between said walls at the base thereof, said primary fire box having fire box front and rear walls extending between the side walls, a fire box cover extending rearwardly from the front wall and having an outlet adjacent the rear wall, a baliie plate extending forwardly from the rear wall above the said outlet, a heating chamber formed above the cover, said chamber lQll - an intermediate horizontal baffle having heating chamber front and back walls, the front Wall being supported on the cover and the back well being supported on the baffle plate, the said end walls being set inwardly from the ends of the side walls, extending across the heating" chamber between the side walls and from the heating chamber front and back Walls, said baflie extendin beyond said front and back walls and havingv a. passage therethrough adjacent the front heating chamber wall, a top cover over the side walls and the heating chamber front and back walls extending beyond the said latter walls and having an outlet'adjacent the heating chamber rear walls, a stack of straight pipes in the heating chamber below and above the baflle, said pipes extending through the heating'chamber front and back walls and having return bends beyond said walls, the side walls, the top cover and the baflle enclosing the said return bends.

In testimony whereof we have signed our names to this specification.

- FRANCIS C. MOORE.

PERRY VANDERVOR'I.

and doors positioned'between' 

